JPS59218294A - Laser working device - Google Patents

Abstract

PURPOSE:To permit easy measurement of an object to be worked and to enable control of the position and movement thereof by providing a measuring device whuch observes, measures and records the image of the object in an emitting part which emits a laser beam. CONSTITUTION:A laser beam 5 emitted from a laser device 1 enters an emitting part 4 via an incident part 2 and an optical fiber 3. Said beam is diffused by a lens 9 and is paralleled by a lens 10. The parallel beams are condensed by a lens 11 and the condensed light is irradiated to an object 12 to be worked, by which working is accomplished. The working condition of the object is observed, measured and recorded by a measuring device 6 via an optical fiber 7 through a lens 14 provided in the part 4. A heat radiator 16 is provided on the outside circumference of a lens-barrel 15 attached with lenses 9, 10, 11 to cool said barrel.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laser processing device using optical fibers.

BACKGROUND ART Recently, with the development of optical fibers and peripheral devices thereof, methods have been used in which a laser device uses optical fibers to transmit a laser beam to a workpiece to perform processing such as heat treatment, welding, cutting, etc.

However, when a workpiece is irradiated with a laser beam and processed, the state of the workpiece at the irradiation position cannot be observed accurately from the side, and the Since it is customary for laser processing equipment to process multiple locations using multiple optical fibers, it is difficult to observe the processing, and the observation results cannot be measured, recorded, or controlled. have

In order to eliminate the above-mentioned conventional drawbacks, the invention of the tree observes and measures the image of the workpiece at the output section that emits the laser beam.
Since we have invented a laser processing apparatus equipped with a recording device, examples will be described below with reference to the drawings.

Embodiment l FIG. 1 is a perspective view of one embodiment of the laser processing device of the Wood invention.
FIG. 2 shows an enlarged sectional view of the emission part.

A laser device (1), an entrance part (2) that makes the laser beam enter the optical fiber (3) from the laser device (1), and an optical fiber (3).
), an emitting section (4) that emits the laser beam (6) is sequentially connected, and the image of the emitting section (4) and the workpiece are viewed;
Measuring device R (6) for monitoring, measuring, recording, etc. is connected to optical fiber (7
) to constitute the laser processing apparatus of the present invention.

As shown in FIG. 2, in the emission part (4), the laser beam is diffused by a lens fil+ close to the end face (8) of the optical fiber (3), and converted into a parallel or nearly parallel beam by a lens +11. A lens is provided so that it is converged by a lens and its focal point is on the processing section 01 of the workpiece.

Between lens (11 and lens (ul), another optical edge #lt
A lens provided at one end of +71, a fork l-j, a lens (14 (Selfoc lens)) made of a focusing optical fiber, etc. are arranged.

Note that the measuring device (6) is composed of an optical system device or a light-to-electrical conversion device, and directly observes fΦ of the workpiece.

However, it can also be observed, measured, and recorded using a projector, television, etc.

Further, the nail tube steel to which the above-mentioned lens fl Ool H is attached is preferably made of a metal with good thermal conductivity, and a radiator or a cooler is provided around its outer periphery for cooling.

Also, optics #I! It is also possible to make the fiber (7) longer and place the measurement position (6) near the laser beam entrance part (2) for observation.

Since the laser processing apparatus of the present invention has the above configuration, the laser beam emitted from the laser device* +I+ is
) enters the optical ##1ttR1, passes through the optical M fiber, and irradiates the workpiece (I4) from the output section (4).

The processing state of the workpiece is determined by the lens 0 installed in the output part (4).
4, passes through an optical fiber (7) and is observed, measured, and recorded by a measuring device (6).

The position and movement of the workpiece can also be controlled based on the results of observing, observing, measuring, and recording the image of the workpiece.

Embodiment FIG. 3 shows another embodiment of the measuring device used in the laser processing apparatus of the present invention.

As shown in the figure, an irradiation section (19) having a half mirror aη and a light source (11) is provided at the other end of an optical fiber (7) whose one end is connected to the emission section, and the irradiation section is connected to the measuring device. be.

Optical fiber from light source 1181 (71K light is input, passes through the optical fiber, irradiates the workpiece from the output part, and the reflected image of the workpiece passes through the optical fiber again and returns to the other end) -
It is reflected by the humirar 0 and observed and measured using a measuring device.

Note that a prism or the like may be used instead of the half mirror.

As described above, a laser beam is emitted using an optical fiber, and
Since the processing status of the workpiece can be measured, the workpiece can be processed at multiple locations using multiple optical fibers from one laser device, and each workpiece can be observed, measured, recorded, and controlled. The effect will be greater if you do so.

Furthermore, when complex machining is performed by combining machining locations and machining methods, it is easier to observe, control, etc. For example, in heat treatment, excellent effects can be achieved by combining quenching, tempering, annealing, etc., or by combining heat treatment welding, cutting and welding by one worker or computer control, etc. This invention has the following.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the laser processing apparatus of the present invention;
FIG. 2 is an enlarged cross-sectional view of the emission section, and FIG. 8 is a cross-sectional view of a main part of a measuring device according to another embodiment. (ri...Laser device, (2)...Incidence part%131+
71...Optical fiber, (4)...Emission part, +61...
・Laser beam, (6)...Measuring device, +91 [11
[ul...lens, (12...workpiece, +1→・
...Lens, steel...lens barrel, 0 ambiguity...radiator, (1η
...Half mirror 1 (!→...Light source, (+9)...
・Radiation Department Acupuncture

Claims (2)

[Claims] (1) In a device that is sequentially provided with a laser device, an entrance section through which the laser beam enters the optical fabric H# from the laser device, an optical fiber, and an output section, the image of the workpiece is observed, measured, and recorded at the output section. A laser processing device characterized by being equipped with a measuring device that performs (2) A lens barrel with good thermal conductivity is provided at one end of the optical fiber of the emission section, and a radiator and a cooler are provided on the outer periphery of the lens barrel. Laser processing equipment described in section